I. verb
to move or go stealthily and furtively
sneaked into the garage and stole the car
Synonyms: creep, glide, gumshoe, lurk, ||meech, pussyfoot, shirk, skulk, slide, slink, slip, sly, ||snake, ||snook, steal; compare steal 3
Related Word: crawl, slither, worm, prowl
Idioms: go on (little) cat's feet, move under cover
Contrasted words: barge, strut, swagger; clump, stamp, stump; stride; march, parade
II. noun
a person who behaves in a stealthy, furtive, or shifty manner
found out that he was a liar, a cheat, and a sneak
Synonyms: slink, sneaker, sneaksby, weasel
Related Word: blackguard, knave, scoundrel; cur, heel, louse, reptile, skunk, snake; *shithead, toad
Idioms: Jerry Sneak, *sneaky bastard
III. adjective
Synonyms: secret 1, clandestine, covert, furtive, hole-and-corner, hush-hush, stealthy, sub-rosa, surreptitious, undercover